Another thing: Bret Devereaux has some very detailed analysis on his blog ([1],[2]) of various LOTR battles/war campaings and it seems that Tolkien was meticulous about getting details of the warfare right, like how far and how fast can army move, what the commander can and cannot know at given time, and how medieval style battles are actually won/lost (including the impact of morale). Compare that with the mess that are two last seasons of Game of Thrones...
[1] https://acoup.blog/2019/05/10/collections-the-siege-of-gondo...
[2] https://acoup.blog/2020/05/01/collections-the-battle-of-helm...
“Real world” stories don’t need to dwell on it much because you can just use history and real life - if you base a story in 50s Detroit it’s going to be much different than 2020s Detroit. And if you mess it up and claim 2020s Detroit is a bustling hub of automobile manufacturing it’s going to feel off.
But fiction, especially fantasy and sci-fi, needs a lot of these details to be at least thought about. Then the references and glimpses will feel correct and real.
You mean the book that has a 40(?)-page chapter in which characters you never hear from before or afterwards describe what's happening in their home lands didn't go into the day-to-day? :)
Lord of the Rings (the book) is obsessed with this kind of detail to the point that many people find it difficult to read.
The only characters who speak at length at the Council are Glóin, Elrond (whose account is mostly skipped over), Boromir, Gandalf (the longest account), Aragorn, Frodo and Bilbo.
All of these are previously known characters except Boromir and he is certainly a major character. Plus they all add either new backstory about the ring or foreshadow something later, like Moria has been reoccupied and there is something evil there.
So there really isn't any information given that doesn't bear on the story at all.
Tolkien could have (and I believe in his notes he has versions) written the entire council, but he elides the parts that are "told elsewhere" - Bilbo, much of Gandalf and Elrond, and anything directly already told of the Hobbits.
But Glóin actually appears in the previous chapter Many Meetings, where he is sat next to Frodo at the feast and introduces himself there.
My dad was a literature nerd. He loved Tolstoy. Personally, I’d rather be tortured by the Czars secret police than suffer through that. :)
And the films, for the most part, stuck very close to the source material.
... And then you get The Hobbit.
Although when they depart, they swung for the fences. Multiple times Peter Jackson felt the need to throw out Tolkien's central theme (that the Ring isn't all powerful, and there are stronger forces like virtue or friendship), just to get cheap drama when characters act out of character under the influence of the Ring. It was really aggravating.
This is not the central theme of LOTR (the books). While forces like virtue and friendship are important, the central theme was you can survive even the worst evil if you retain your humanity. (Remember: LOTR was heavily influenced by Tolkiens' experience as a soldier in WWI.)
This best encapsulated by Sams' speech at the end of the second film:
"It’s like in the great stories, Mr. Frodo. The ones that really mattered. Full of darkness and danger they were, and sometimes you didn’t want to know the end. Because how could the end be happy. How could the world go back to the way it was when so much bad happened. But in the end, it’s only a passing thing, this shadow. Even darkness must pass. A new day will come. And when the sun shines it will shine out the clearer. Those were the stories that stayed with you. That meant something. Even if you were too small to understand why. But I think, Mr. Frodo, I do understand. I know now. Folk in those stories had lots of chances of turning back only they didn’t. Because they were holding on to something.
Is that the theme? The ring wasn't beaten by the power of virtue or friendship. It was beaten by itself.